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13150001 = 73180137
BaseRepresentation
bin110010001010…
…011100110001
3220202002102002
4302022130301
511331300001
61145503345
7216526124
oct62123461
926662362
1013150001
117471877
1244a1b55
132955587
141a643bb
15124b46b
hexc8a731

13150001 has 4 divisors (see below), whose sum is σ = 13330212. Its totient is φ = 12969792.

The previous prime is 13149973. The next prime is 13150003. The reversal of 13150001 is 10005131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10005131 = 78712713.

It can be written as a sum of positive squares in 2 ways, for example, as 11122225 + 2027776 = 3335^2 + 1424^2 .

It is a cyclic number.

It is not a de Polignac number, because 13150001 - 26 = 13149937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13150003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89996 + ... + 90141.

It is an arithmetic number, because the mean of its divisors is an integer number (3332553).

Almost surely, 213150001 is an apocalyptic number.

It is an amenable number.

13150001 is a deficient number, since it is larger than the sum of its proper divisors (180211).

13150001 is an equidigital number, since it uses as much as digits as its factorization.

13150001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180210.

The product of its (nonzero) digits is 15, while the sum is 11.

The square root of 13150001 is about 3626.2930107756. The cubic root of 13150001 is about 236.0343780715.

Adding to 13150001 its reverse (10005131), we get a palindrome (23155132).

The spelling of 13150001 in words is "thirteen million, one hundred fifty thousand, one".

Divisors: 1 73 180137 13150001